Improvement in nut-locking washers



LLW'NSLOWJ Improvement in Nut-Locking Washers.

Patented July 30,1872.

{II-llllllllll UNITED STATES PATENT OFFICE.

LQRENZO VINSLOW, OF ROCHESTER, NEW? YORK.

IMPROVEMENT IN NUT-LOCKING WASHERS.

Specification forming part of Letters Patent No. 130,097, dated July 30,1872.

My invention consists in a volute conical spring, formed of brass, iron,or steel wire, round or square, which I denominate and call aspring-washer, which is placed on the bolt d, followed by thefriction-washer 8, both of which are brought to their place by turningthe nut c firmly against them.

Figure 1 shows a perspective view .of two ends of rails joined byfish-plates and bolts. A A show ends of rails; B, fish-plates; dd d (1,ends of bolts; .9 s s s, friction-washers; c c c 0, nuts. Fig. 2 showsan end view of nut c, friction-washer s, fish-plate B, volute conicalspring-washer a, all placed on bolt d.

To apply my device, the fish-plate being placed on either side of therails at the joint, with the bolts in theholes, I place the springwashera on the bolt with its base to the fishplate, followed by thefriction-washer s, both being brought to their place by turning the nutfirmly against them. Thus it will be seen that the constant pressure ofthe spring-washer a against the nut 0, although it may be only partiallyturned up, will prevent the turning back of the nut, thus preventing thebolt becoming loose. Hence the superiority of my device over most otherdevices for holding bolt-nuts from turning back.

Having thus described my invention, what I claim therein as new andvaluable, andde sire to secure by Letters Patent, is-

The volute conical spring-washer, for the use and purposes herein setforth.

Witnesses: LORENZO WINSLO W.

W. L. BISHOP, D. M. DENNY.

